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4020-F20111-HW14

4020-F20111-HW14 - @010 F ~Zou k H it(Lt DIM/0&1 V 1...

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Unformatted text preview: @010 F ~Zou k/ H it (Lt DIM/0&1 V 1.) Tue beiow giwwg expat/{macaw SEN W‘ 0W0 Wstcd/Uéflebu‘ba [H (item/t Tmcbimewg T—(P) Alternating stress amplitude 0'0 (ksi) ' If. X . 1238i T43 V. .,._IO5I‘/cycles . . 4o .-_ j ' W06. I06 , ~ ~ ., ., WWQ/mt ‘ 7 . _ IO . (g 'on£3 ‘ . ~ V'QXWSIWA - 5 o . . ' . “Y ~ I . _v -20 _ . O I 20?i ‘ '40 605"" . Mean stress, ~am(ks:I) I . , 6W; I WCmfl/{g (é) _ _ lWQ 9 Mr“ . g'Fig. IX.6 Various ways of representing the effect oflmean stress on . fatigue life. (a) Alternating stress amplitude vs. mean stress for con- ' fstant fatigue life curves for 2024: T-4 aluminum. (From F. M. Howell ‘ fan-d ]. L. MillenAgcz'al Stress Fatigue Strengths of Several Structural . Aluminum Alloys, ASTM, Proc., No. 55, 1955.) . 0;.) Invesl—toéodre, We, on‘M/ flee/(fl G’AV‘. N 2 Cows +avd- (aw) éVA ‘7 “QWGMLtl/CJ S’ng N .9 nLLWbIflM Q8 C(j Om I ‘Vt/M wwé‘fcu/cvf— {W Q2200 meow §Pv€99 W WHVl/Lw‘rée, (HQ/(1W6 éfmcmcy MAW (7,105: O Mgr {.4 WWI/L, JUVQ/VL %W&§C€1L0¢WCQ (7+0 «2.7. IUCWI‘VLWWYLfm MAM/o wab _ . We 136% 3: (0* qfimoh‘mw 7L0 Jlod~u . WWW/I Q71») 3 932/ W \* fixag C‘) A CWuQfi/W/ cam/w» 4% wow JCth «(Lt/Lad} {UV [fl/CW ijci€1€odfiw (N; H9?) 1 m 1% co flog CdeS +0 fioe/CQWe, 6M Qwa M * Jul/ta MMIWLLEWL 4mgwgmgg W - ' CW Mme mm mm Wm 514W JCW ” “[0 beirwte) ' ' ' WM mm 6» m m .ewa @8le kl“ fi/ué‘ WWW 7. \l . WWW”, W (714/ JCLLQ W MAWLSWQ/ (2; T abie 5’: Resutts 0% the 31415-5115.... 254 SMO has a mean stress of 795 MP3, g 20 A328 L7 has a means stress «£580 MPa. ' L 2 ‘ A328 E], air A320 L7, seawater 7 O “O ' (97 .254 8M0: seawater as N: (‘MPa1 - (cycies) AS- N '~ 'l/d 94 M {MPa} (cycies; 1.5-1 529 500 I S New ‘SM/ 2E¢§H0 AS N (M‘Pa) {cycie‘s} 0L) (Hodge CL ‘fUCOO came/{fly} Ofiflke N+0fodécw8,1flw 6} :23? HFa, 6M = SQOKF/‘r 0% HQ #320 63¢>Q+gfl Ddeww ’56. M >\ w, (arm; MFA) 6314;5gp N‘Tw HWWGLWH is SPQCQOQ W Mm D WI ASTM D1141 — 98(2008) Standard Practice for the Preparation of Substitute Ocean Water - Page 1 >1 (Qt/L W (A (of e W Mote/ad yaw/v 00697, b ASTM D1141 - 98(2008) Standard Practice for the Preparation of Substitute Ocean Water Active Standard ASTM D1 141 Developed by Subcommittee D1202 [Book of Standards Volume: 11.112 Back to W ASTM D1141 - 98(2008) Buy Standard (PDF) mDLQiIlfQ 3 pages . $ 35.00 'iéfiy*:fs1andaid~=(fifint ASTM D1141 Significance and Use This su I ' te ocean water may be used forlaborato te ' W5 solution simulatin sea water IS requlred Exam les are for tests on oil contaminatio detergency evaluation, and corro tetin . < \‘,__ _.__ Note 2—The lack of organic matter, suspended matter, and marine life 1n _ not permit unqualified acceptance of test results as representing performance in actual 'ocean water. Where corrosion is involved, the results obtained from laboratory tests may not approximate those secured under natural testing conditions that differ greatly from those of the laboratory, and especially Where effects of velocity, salt atmospheres, or organic constituents are involved Also the rapid depletion of reacting elements present in low concentrations suggests caution in direct application of results. - '1. Scope 1.1 This practice covers the preparation of solutions containing inorganic salts in proportions and concentrations representative of ocean water. Note 1—Since the concentrations of ocean water varies with sampling location, the gross concentration employed herein is an average of many reliable individual analyses. Trace elements, occurring naturally in concentrations below 0.005 mg/L, are not included 1 .2 This practice provides three stock solutions, each relatively concentrated but stable in Storage. For preparation of substitute ocean water, aliquots of the first two stock solutions with added salt are combinedin larger volume. An added refinement in adjustment of k P \ ;‘ http://Www.astm.org/Standards/D1141.htm 11/22/2011 7:01 :05 PM a) :tg ng/O y? M; law/+9 Wfio Q06“ $00 100000 cawwh‘ve fl-) AVLW 3AM WWOJCM (“law 3% W 6’3 W t (MAW W i flefiWe W 2”; W 3‘} Asgummgr co, WW cm OLUWMEYQWW?CW9€ WMWWWM5C9V8M/ '. t , _ . .,_ ‘ ‘ ‘ , - s a g ’ - ' X x K S I ' 5 X I ‘, f I‘E‘FUL‘LLMEs.fw‘AiRRQw ,Mw’b'as f ' ' ' ’ h r L 5”_~-‘r-,pAsH'ED LINE :. mom MW!) :Ps 3 . ._ 2:, m151'" ."~“7*Io“ I ' t0,“ 109;. ~ \ 7107 , In“ »» j- Nil—VQYQLES TO .FNLURE‘VH - \ Tm WW‘ Mwflwa Iké m I MW WFCOMW<§§ CM MW fl LQGG OCLCUCM 601084‘ (Cad/EM WW 6606 0M {\MCchfW/Lé - Q) QWWW (WWKJ M me - wwmxfiffi .. ., iwé-V-M / VW @WflQSWW [(71% ma (1 fuch 4/ {m0 {0 YLW Jorth WWW/u] W yW (jaws/6 2029 v a w ...
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